# Decibels vs FieldReg

The clearest difference is iOS requirement: Decibels at 17.0 against FieldReg's 26.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Decibels sells 1 in-app purchase, starting at $3.99 per month and FieldReg sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Decibels | FieldReg |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (22 ratings)](https://appshunter.io/ios/app/decibels-sound-level-db-meter/id1590741461/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 22.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 30 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 1 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Real Vision Ltd](https://appshunter.io/developer/1447773149) | [Aphelion Engineering Pty Ltd](https://appshunter.io/developer/1896778280) |

## What reviewers say

### Decibels

[App page](https://appshunter.io/ios/app/decibels-sound-level-db-meter/id1590741461)

Measure sound levels in decibels using your device's microphone. View real-time graphs and historical data to detect noise pollution and protect your hearing. Calibrate for accurate readings across various environments.

**Highlights:** Measures sound in decibels (dB), Displays sound samples on a graph, Detects loud and low environmental noise, Calibrated for accuracy, Shows min/avg/max decibel values, Saves data and view history, Calibrates decibel for each device

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| dB Meter Full App Access | $3.99 | per month |


### FieldReg

[App page](https://appshunter.io/ios/app/fieldreg-modbus-decoder/id6782255844)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FieldReg Pro | $12.99 | one-time |


## Frequently asked questions

### Is Decibels free?

Decibels is free to download, with in-app purchases available.

### Is FieldReg free?

FieldReg is free to download, with in-app purchases available.

### Do Decibels or FieldReg have ads?

Neither Decibels nor FieldReg shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*